gain trace; 指地震记录上表示一道或几道所用的增益大小(放大倍数)的曲线。
转向系统的流量增益曲线fig。
对于每一气体压力，有与最佳增益曲线对应的流速范围。
It shows that there is an optimum flow velocity corresponding to the best gain distribution for a given operating pressure.
压力增益曲线被用于阀门的精确建模，但对闭环控制的影响很小。
The pressure gain curve is used for accurate modeling of the valve but has little effect on closed loop control.
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